售后服务
线上技术支持, 现场安装, 现场指导, 现场检测, 免费备件, 退换货, Other
Product name
Garage door torsion spring
Size
1 3/4'', 2'', 2 5/8'', 3 3/4''
Thickness
207/218/225/234/243/250
Material
Carbon steel / Manganese steel
Finished
Antirust Oil/Dacromet coating/Electrophpresis coating
Function
For sectional door use
Hardware System
USA / EU standard